Crestron ZUMMESH-JBOX-20A-PLUG handleiding

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Handleiding

6 • Installation and Setup of Crestron RF Products Best Practices – DOC. 6689H

Limits on Children (Leaf Nodes)

Leaf nodes are battery devices also referred to as “children.” Each child needs a routing

parent device. Parents have a child table for storing information about each of their children.

Depending on the specific parent device model, parents can store information for a different

number of child devices at any given time. Note that children and neighbors are not the

same. Router devices can have neighbors, which are router devices that directly connect to

the mesh. The router device can send messages directly to or through its neighbors.

If a network has more children than routing devices, overall or within any particular area, the

child tables of all reachable routing devices could be full. Some children can then be

orphaned. When an orphan sends a message, a routing device accepts the message but

needs to replace an entry in the child table with information from the sending orphan. The

replaced device then becomes an orphan. This process of swapping orphans has several

negative effects on network performance as follows:

• Slower response such as a delay from button press to lights on and off

• Lost messages such as the need to press a button more than once to trigger an

action

• Reduced battery life because orphaned devices need to send additional messages

The number of children on each routing device can be seen when the InfiNET EX Diagnostic

Tool is used or when the Post Installation Checks script is run. This tool displays the number

of children for all routing devices.

Child Table Sizes

DEVICE TYPE MAXIMUM CHILDREN

Gateway 20

Router Device 6

Expander 6

Expanders

When an installation requires too many child devices for the number of routers, introduce

expander devices. Expanders are routing devices and provide additional child slots. Use

expanders to extend the range of a network.

There are two expander models: CLW-EXPEX-GD-W-T and GLA-EXPEX. The

CLW-EXPEX-GD-W-T model plugs into a wall outlet and the GLA-EXPEX is designed so

that it can be mounted in a utility area.

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